Advent calendar 2017

Archive

Show me a random puzzle

Tags

square numbers logic pascal's triangle regular shapes cubics tournaments combinatorics folding tube maps percentages wordplay partitions calculus geometry digital clocks geometric mean symmetry probabilty geometric means palindromes lines integration proportion binary books expansions 3d shapes range sum to infinity grids 2d shapes sums quadrilaterals taxicab geometry colouring graphs trigonometry dates chess scales axes prime numbers products integers complex numbers coins quadratics dice chalkdust crossnumber indices mean rugby digital products square grids functions doubling sets even numbers star numbers cards digits surds speed determinants planes elections multiples triangle numbers medians arrows money clocks matrices multiplication cryptic crossnumbers number differentiation consecutive integers polynomials square roots sequences coordinates numbers neighbours tangents cryptic clues irreducible numbers means powers perfect numbers fractions dodecagons the only crossnumber sport hexagons remainders decahedra unit fractions consecutive numbers shapes cube numbers christmas spheres addition rectangles tiling factorials circles bases time multiplaction squares people maths shape triangles odd numbers floors games balancing dominos probability pentagons ave ellipses crosswords chocolate parabolas division factors squares routes polygons crossnumbers algebra xor albgebra lists volume median advent gerrymandering angles perimeter area menace prime factors averages